| 摘要 |
A pneumatic tire includes a tread having a tread surface, circumferential main grooves on the tread, and land portions formed between the circumferential main grooves. Each of the circumferential main grooves has, in a lateral cross-sectional view, a groove bottom surface, an outside groove wall surface, an inside groove wall surface, an outside curved portion connecting the groove bottom surface with the outside groove wall surface, and an inside curved portion connecting the groove bottom surface with the inside groove wall surface. In the lateral cross-sectional view, (a minimum curvature radius of the outside curved portion)>(a minimum curvature radius of the inside curved portion) is satisfied. (the groove wall angle α [between a tread normal line and the outside groove wall surface])<(the groove wall angle β [between a tread normal line and the inside groove wall surface]) is satisfied. |
| 主权项 |
1. A pneumatic tire comprising:
a tread that has a tread surface; a plurality of circumferential main grooves that are formed on the tread; and a plurality of land portions that are formed, on the tread, between the plurality of circumferential main grooves, wherein each of the plurality of circumferential main grooves has, in a lateral cross-sectional view, a groove bottom surface, an outside groove wall surface located on an installation outer side, an inside groove wall surface located on an installation inner side, an outside curved portion connecting the groove bottom surface with the outside groove wall surface, and an inside curved portion connecting the groove bottom surface with the inside groove wall surface, (a minimum curvature radius of the outside curved portion)>(a minimum curvature radius of the inside curved portion) is satisfied in the lateral cross-sectional view, and, when, in the lateral cross-sectional view, an angle of the outside groove wall surface to a tread normal line at a border edge between the outside groove wall surface and the tread surface is denoted as a groove wall angle α and an angle of the inside groove wall surface to a tread normal line at a border edge between the inside groove wall surface and the tread surface is denoted as a groove wall angle β, (the groove wall angle α)<(the groove wall angle β) is satisfied. |
